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calling all sound engineers
#2260686 04/12/14 12:54 PM
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what do you think of this setup of a polk audio m70 speaker. I can feel the keys vibrate when I play lol. Any pros or cons about sound? I know they are somewhat directional speakers so ideally you want them to face you. But I like the fact that the sound shoots up and around the room as its reflecting off the back wall and side wall in a corner. [Linked Image]

I'm having a hard time getting galaxy pianos sounding to my liking though. (Too much bass instead of clarity) its playing through my receiver at 24bit 192khz though so that's a good setting right? Let me know and try to keep it somewhat non technical as I dont have a sound engineering degree lol

Last edited by craig son of berg; 04/12/14 12:57 PM.

play that one again sam
Re: calling all sound engineers
craig son of berg #2260716 04/12/14 02:58 PM
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That's obvious that you have too much bass when listening on that beats... Get some normal speakers, not something with four 6,5 woofers...

Why you will not buy some monitors and płace them correctly with the art?
And you have in the worst possible positive...

It cannot sounds well just looking in it.

Re: calling all sound engineers
craig son of berg #2260725 04/12/14 03:41 PM
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The boomy sound is probably mostly to do with speaker placement. I'm not familiar with this speaker but they have a reputation for ample bass - maybe too much for natural sounding piano because a real piano does not have a strong bass component, comparatively speaking.

The speakers should be forward facing, away from the wall, forming an equilateral triangle with your position. Keep them well clear of corners or confined areas of any sort which will tend to resonate at low frequencies and emphasize certain frequencies in a way you don't want for natural sounding reproduction.

You can probably use in-computer EQ too, to shape the sound as you want - but after getting the speakers positioned well, preferably.


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Re: calling all sound engineers
craig son of berg #2260842 04/12/14 09:11 PM
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I would think if you kept your eq flat on your receiver you shouldn't have too much bass regardless of the speakers used as long as your speaker(s) is/are full range. I think I understand what you are trying to do with the tower speaker placed horizontal behind the KB - to use it as a widely dispersed sound source - but it might be some of the problem. Some smaller (4 perhaps for even dispersal) forward facing bookshelf speakers behind the KB or below might be worth trying. You could then add a sub to handle the lower frequencies, perhaps placed below and centre of the KB. Subs are omni directional so you shouldn't be able to tell where it sits relative to the other speakers. I think you'll have to do some experimenting with placement. Room acoustics influence the sound as well. As for the 24/192 source that should be an excellent quality setting.

Re: calling all sound engineers
GLR #2261024 04/13/14 12:02 PM
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thanks for the help guys. Yes the receiver is set to 'straight' no eq or dsp effect. they are also set to full dynamic range via receiver. You can see a piece of my second m70 on the bottom left of picture facing me at a 45 deg angle. What im really trying to do is emulate (in a ghetto way lol) the way a digital grand speakers face and also get the vibration feedback on the keys at the same time the way a real grands keys vibrate.

I really dont want to spend more money on more speakers as I got these two nice ones to fill the room with sound rather than direct sound that monitors do.

Im sure if I play around with galaxy pianos numerous sound settings I can get it to work right. ( I just dont know exactly how they all work together to create the sound I want)

Last edited by craig son of berg; 04/13/14 12:08 PM.

play that one again sam
Re: calling all sound engineers
craig son of berg #2261029 04/13/14 12:12 PM
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I would have the speakers underneath the keyboard,facing the player. Towards the wall boosts bass unnaturally.


If the piano is the King of instruments then I am its loyal servant.

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Re: calling all sound engineers
LarryShone #2261040 04/13/14 12:53 PM
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thanks larry I was actually thinking about this myself. Only problem is this is really going to raise the piano. I might just try it though. BTW speaker is not facing a wall. Its pointing to the ceiling.

on a side note.. that px3 in the picture with missing screws is going to turn into a vpc1 tuesday...cant wait!

Last edited by craig son of berg; 04/13/14 01:11 PM.

play that one again sam
Re: calling all sound engineers
craig son of berg #2261059 04/13/14 01:54 PM
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One problem:

. . . Tweeters tend to be directive.

So if your tweeters are pointed up, and your head is beside the speaker, you're getting "direct-wave" bass (at full volume), and "reflected-wave" highs.

If the sound is somewhat dull, that could be the cause.

Tilt that upper loudspeaker, on its long edge, so that it's facing your head (as a monitor would), and position it so that its tweeter (wherever it is) is in the center of the keyboard. That will turn it into a "monitor speaker", more or less, and may help you out.

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. Charles
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Re: calling all sound engineers
craig son of berg #2261090 04/13/14 02:58 PM
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Try placing the speakers on either side of the piano, angled inward toward, and raised up on stands so that the top of each speaker is at ear level.

Re: calling all sound engineers
MacMacMac #2261108 04/13/14 03:55 PM
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thanks everyone for your help. I will try it all the ways everyone said and let you know what works for me. Btw I am able to improve the sound with galaxy pianos by turning off concert hall effect(big diff in bass) and dynamic range of piano and low keys tone menu. anybody familiar with galaxy and yes I watched the youtube videos.

Last edited by craig son of berg; 04/13/14 04:05 PM.

play that one again sam
Re: calling all sound engineers
craig son of berg #2262528 04/16/14 09:55 AM
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placing the speakers standing upright behind the piano works the best for me.( I took off the floor cones on the bottom of the speakers so they would stand flat on the desk) Laying the speaker on its side and putting the piano on top was great for the vibration through the keys but the sound still was muffled.(im satisfied with current setup producing the vibrations) someone needs to invent a speaker that is omnidirectional and sounds good. [Linked Image]

Last edited by craig son of berg; 04/16/14 12:55 PM.

play that one again sam
Re: calling all sound engineers
craig son of berg #2262961 04/17/14 08:15 AM
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Omnidirectional? Sure, they exist, here's one company (and I'm sure there are others): http://www.duevel.com/home/loudspeaker.shtml

Not cheap, although considering the high-end speaker market they don't seem out of line.


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Re: calling all sound engineers
craig son of berg #2262969 04/17/14 08:51 AM
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If you have your keyboard on a table, I'd give one of these a try:

[Linked Image]

I haven't tested one personally, but as far as I can see, it's a similar idea to the "transducer" in the CA95.

Search for "vibration speaker" on Amazon. They are cheap - £25 for a 10W model or £54 for 26W (CA95's is 15W).



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Re: calling all sound engineers
lolatu #2262977 04/17/14 09:08 AM
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Originally Posted by lolatu
CA95's [trandsducer] is 15W.


No, it's 45W.


Employed by Kawai Japan, however the opinions I express are my own.
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Re: calling all sound engineers
Kawai James #2262981 04/17/14 09:19 AM
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Originally Posted by Kawai James
Originally Posted by lolatu
CA95's [trandsducer] is 15W.


No, it's 45W.


Why does it have "15W" printed on it then?

[Linked Image]


Kawai CA95 / Steinberg UR22 / Sony MDR-7506 / Pianoteq Stage + Grotrian, Bluethner / Galaxy Vintage D / CFX Lite
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Re: calling all sound engineers
lolatu #2262998 04/17/14 10:00 AM
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Originally Posted by lolatu
Originally Posted by Kawai James
Originally Posted by lolatu
CA95's [trandsducer] is 15W.


No, it's 45W.


Why does it have "15W" printed on it then?

[Linked Image]
lol kind of like how a lady always lies about her dress size idk.

I like the idea of using a transducer but would still like the clarity of my polk m70's. I wonder if there would be a conflict of using both?


play that one again sam
Re: calling all sound engineers
Deffie #2263005 04/17/14 10:12 AM
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Originally Posted by Deffie
Omnidirectional? Sure, they exist, here's one company (and I'm sure there are others): http://www.duevel.com/home/loudspeaker.shtml

Not cheap, although considering the high-end speaker market they don't seem out of line.
I like the concept they are doing here. Wouldn't digital grands want to incorporate this idea as well for the 360 immersion effect.


play that one again sam
Re: calling all sound engineers
lolatu #2263012 04/17/14 10:35 AM
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Originally Posted by lolatu
Originally Posted by Kawai James
Originally Posted by lolatu
CA95's [trandsducer] is 15W.


No, it's 45W.


Why does it have "15W" printed on it then?


I don't know, but the specifications show 45W.


Employed by Kawai Japan, however the opinions I express are my own.
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Re: calling all sound engineers
craig son of berg #2263028 04/17/14 11:06 AM
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15w can be power of transducer, but the 45 can be power of the transducer amplifier, if one exists (should be)

Re: calling all sound engineers
kapelli #2263036 04/17/14 11:25 AM
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Originally Posted by kapelli
15w can be power of transducer, but the 45 can be power of the transducer amplifier, if one exists (should be)

Exactly right; the transducer is clearly only 15W (which happens to be perfectly sufficient, since it is very loud), but is plugged into a 45W amplifier that is the same as those for the left and right channels (the 3 of them are just above the pedals).

Also, the specs are wrong, probably to try to impress people who think watts translate directly into decibels. If not, then there must have been a huge cock-up with the parts, and Kawai needs to issue a recall to retrofit all the CA95s in the world with actual 45W transducers. wink


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